 fn() //5
 function fn () {
     console.log(1)
 }
 fn() //5
 function fn () {
    console.log(2)
}
fn() //5
var fn = function  () {
    console.log(3)
}

fn() //3
function fn () {
    console.log(4)
}
fn() //3
function fn () {
    console.log(5)
}
fn() //3
